Mechanism for the margining and the feeding of sheets to rotary machines



March 2 51926. 1,574,784

H. BOBST MECHANISM FOR THE MARGINING AND THE FEEDING 0F SHEETS TO ROTARY MACHINES Filed Feb. 29 1 24 3 Sheets-Sheet 1 177149770/ H Bobs) fa w 1 March 2 1926. 1,574,784

H. BOBST MECHANISM FOR THE MARGINING AND THE FEEDING OF SHEETS TO ROTARY MACHINES Filed Feb. 29 1924 3 SheetsSheet 2 March 2 1926. 1,574,784

H. BOBST MECHANISM FOR THE MARGINING AND THE FEEDING OF SHEETS T0 ROTARY MACHINES Filed Feb. 29 192 3 Sheets-Sheet 5 [bra/war Patented Mar. 2, 1926.

UNITED STATES rArEnT orrice HERI BOBST, or LAUSANNE, SWITZERLAND, Ass'renon '10 nrantrssnivrnnrs MARINONI, soorn'rn ANQNYME, or rears, FRANCE. A conrona'rron or FRANCE.

MECHANISM roe THE MAReInrna AND THE FEEDING V MACHINES.

or snnn'rs 'IO ROTARY Application filed February 29, 1924. Serial No. 686,015.

To all whom it may concern:

Be it known that I, HENRI Bons'r, a citizen of Switzerland, residing at Lausanne, Canton of Vaud, in the Confederation of Switzerland, have invented certain new and useful Improvements in Mechanism for the Mai-gluing and the Feeding of Sheets to Rotary Machines, of which the following is a specification.

The invention relates to a mechanism for the margining and the feeding of sheets to rotary machines for working the paper,

card-board, and other sheet material and comprising a device for the introduction of.

marginated sheets, and having rotary feeding members between which the sheet is made to pass in order to arrive at the marginating members, whereby at least one of saidrotary members being capable of being displaced vertically with regard to the other.

The mechanism comprises members for periodically operating the marginating members and the feeding members, these latter at least separating them one from the other in order that a sheet is allowed at the marginating members and for stopping their rotation, in such a manner that the sheet is pinched between them during a stoppage'of this movement, the feeding members being thereupon operated in such a way, that the sheet is being delivered to the entraining members of the working machine at a speed which essentially corresponds to their circumferential speed.

The attachet drawing shows a working form of the invention given by way of example.

Fig. 1 is a plan view showing partially the working machine certain members being however not represented for the sake of more clearncss. I

Fig. 2 is a side elevation of said mechanism (side opposite to the drive) Fig. 3 is a section along the line a-a of Fig. 1, showing the margining targets.

Fig. a is a section along the line 6-4) of Fig. 1, showing an air brake and the driving member of the shaping machine.

The Figs. 5, 6, 7 and 8 show the margining targets and the feeding mechanism in different working positions.

Fig. 9 represents a brake of the sheet entraining top roller.

Fig. 10 shows'a cross-bar for blocking the feeding mechanism and Fig. 11 refers to a detail of the air brake.

The sheets which are to be fed tothe working machine are piled on to the table 1 (Fig. 3) against the margining targets 2 and against a lateral target not represented inthe drawing. The'placing of the sheets is effected by hand or automatically by means of the marginer.

Each of the fork shaped margining targets 2 is mounted on a slide 3 and may swing on an axle 4 and become, fixed in a psition determined by the screws 5 and 6 of a rod 7 connected to the slide 3. This latter may slide vertically within a support 8. A spring 9 aims at producing an upward movement of the slide 3 whilst a lever 10 keyed on a shaft 11 is provided forcausing a downward movement of the guide or of the target 2 respectively. Bossages 12 of the supportS are traversed by the shaft 11 and support a guide 13 serving'as a rest to the sheet 14. i

The support 8 may be laterally displaced. It is retained upon a cross-tree 15 by means of a head'sliding within a groove 17. The cross-tree 15 is fixedto the members 18 and 19 or the shaping machine. VVhen the target is laterally displaced the keyof the lever 10 slides in a groove 20 of the shaft 11, the lever being entrained by the bossage 12 of the support 8.

The elevation and the intermittent descent of the target 2 is obtained by the'shaft 11 rotating in the members 18 and 19. One of the ends of this shaft carriesa double lever 21' (Figs. 2 and 10) whose lower por-- tion does, owing to the springs 9, press constantly upon a lever 22 which pivots on a gudgeon 23 and carries a roller 24 rolling upon a cam 25 whose rotation produces an alternative motion of lever 22 from which it is transmitted to the shaft 11. The cams 2 5, 26 and 27 are keyed onto the wheel 28' running loosely on a .gudgeon 29. The wheel 28 is rotated by the driving pulley 31 by the intermediary ofa pinion and of a. shaft 32 (Figs. 1 and 2).

An axle 33 rigidly fixed to the members 18 and 19 supports the superior guides 34 of the sheets 14. Each guide 34 may be raised or lowered in accordance to the thickness of the sheets by means of the screws 35 and 36 which maintain said'guide upon a support 37' sliding on the axle 33 (Figs. 3 and 8).

Bynnscrewing a screw 38 each guide 34 may be displaced simultaneously with the target 2 in order to retain the position shown in Fig.8.

The lower roller 39 for feeding the sheets rotates freely in the members 18 and 19 and carries at one of its ends a pinion 4O operated'by a toothed sector 41 (Fig. 1) carried by a shank ofa bent lever turning loosely on agudgeon 42. This same shank carries a roller 43 rolling on a cam 27 and the other shank is submitted to the action. of a spring 44 which tends tomaintain the roller 43 in Contact with the cam 27. The latter which is operated by the wheel 28 causes, by the intermediary of the sector 41, a periodical rotary motion of the roller 39. g

A pin-ion 56 mounted upon the rollerv 39 on the side of the drive, engages with a rack 57 sliding in a support 58 fixed on the cross-piece 15 (Fig. 4). The rack 57 is connected to a piston 59 sliding within a cylinder 60 fixed to the framing of the shaping machine.

The lower portion of the cylinder 60 is provided with a valve 61 (Fig. 11) which has a hole 62 in its center which is partially closed by a ball 63 kept in position by a screw 64. The air passing through the opening left open by the ball 63 may escape through a lateral hole 65. The chamber 66 is communicating with the outside through the opening 67 and gives access to the air to the cylinder when the valve 61 is raised.

The Shaft 45 turns freely in connectingrods 46 and 47 and "being kept in position by the grooves 48 and 49 of the members 18 and 19 carries the entraining rollers 50 coming periodically into contact with the roller 39. The entraining rollers 50 are connected by means of a sleeve sliding on the shaft 4 The groove 51 between the rollers 50 allows the support 37 to take the rollers along so that'thesedo follow the lateral displacement of the target 2 and of the guide 34 (Fig. 1).

By the intermediary of a roller 52 of the levers 53 and .54 which are simultaneously operated by a shaft 55 the cam 26 causes a periodical raising and lowering motion of the roller 45 by means of the connecting rods 46 and 47 (Fig. 2).

A belt 68 fixed by one of its ends to the cross-tree 15 (Fig. .9) passes over the roller 45 whilst its other end is provided. with a stretcher 69 entering a set screw 70 fixed to the member 19. The tension is regulated in such a way that the roller 45 is braked when it is in its raised position and is free when in its lowered position.

The entraining rollers 71, 72 of the shaping machine are always rotating in the same direction when the'machine is running and the bottom roller 71 carries on one of its ends a pinion 73 engaging with an intermediary wheel 74 operated by the gear 75 of shaping cylinder 7 6. This latter is driven by the gear 77 mounted on shaft 32 (Fig. 4).

The top roller 72 is taken along by simple friction by the roller 71. The journals of the roller 72 traverse the members 18, 19 through two notches 78, 79 and may be raised by two hooks 80, 81 swinging upon the gudgeon 82, 83. By operating the hooks 80, 81 the roller-72 will be raised so that it will come out of contact with roller 71.

A crosshead 84 (Figs. 2 and 10) having two shanks 85, 86 and being operated by the knob 87 is turning freely in the frame 18. The nose 88 of the lever 21 operating the shaft 11 comes into contact with the shank of the crosshead whilst the nose 89 of the connecting rod 46 comes into touch with the shank 86 of the crosshead. The shanks 85., 86 being arranged 90 one from the other it is possible by turning the knob 87 by 90 to bring the shank 85 into a hori- Zontal position whereby the return of lever 21 and consequently the raising of the target 2 is prevented, whilst the shank 86 in its vertical position prevents the descent of the connecting rods 46, 47 and of the shaft 45 respectively.

The working manner of the mechanism is as follows:

The sheet 14 (Fig. placed upon the table 1 is brought against the front targets 2 and a lateral target not visible in the drawing. The placing of the sheet may take place either by hand or by an automatic n'iarg-ining device. The front targets are generally arranged two in number, however a larger number may be provided for. The lateral displacement along the crosstree 15 allows to place them in a convenient distance according to the size of the sheets. The displacement of the target 2 rendered possible owing to the screws 5 and 6 allows to introduce the sheets easily parallel to the rollers or slightly aslant in one direction or the other. The top guide 34 is displaced simultaneously with the target 2 for maintaining the position according to Fi 8. The displacing of the guide 34 or its support 37 respectively causes equally the displacing of the entraining rollers 50 in such a manner that they always work in front of the target 2. The groove 51 between the rollers allows the guide 34 to bring down the sheets which might tend to raise and to lead them exactly to the tar 7 50 press the sheet on to shown in Fig. 5.

get 2. The distance between the guides 13 the tar 'ets 2 the shaft 45 will descend 1111- der the action of the cam 26 until the rollers the roller 39 which at this moment is at rest, the roller 54: of the sector ll. rolling at this instance upon a portion which is concentric to the axle of the cam 27. The position obtained is As soon as the sheet is pressed between the two rollers, the roller i3 is brought in front of a slight cavity of the cam-27 whereby a very slight ba-c 1 motion of the sheet M is obtained whilstthe targets 2 are being lowered under the action of the levers 1O operated by the shaft 11, the lever 21 being raised uncer the action of the roller as rising upon nose of the cam 25 (Fig. 6).

hen the targets 2 are con'ipletely lowered, the cam 2'? acts upon the sector l-l and causes a rotary motion of the roller '39 and thereby the advance of the sheet 14:. The advance, beginning with zero is progressively accelerated and attains when the sheet enters between the rollers T1 and 72 essentially the circumferential speed of these latter. This speed is obtained a few moments before the sheet penetrates between the rollers 71 and 72 and is maintained a few moments afterwards so as to avoid a sliding of the'sheet. As soon as the sheet is gripped by the rollers 71, 72 the'rollers will be raised, the sheet continues its way in the shaping machine being taken along'by the rollers Tland 72 (Fig. 7

The inertia acquired by the accelerated rotation of the roller 39 is absorbed by the air brake (Fig. 4:). According to rotation of the roller 39 the piston 59 compresses air in the cylinder 60 which finally absorbs the whole of the inertia. The eiiicacity of the brake may be increased or reduced by obturating by means of the ball (53 more or less the air channel (32 of the valve 61.

The return of the roller 39 in its initial position is effected slowly under the of the spring 414 Fig. 2). In order to not create a resistance, the vacuum produced by theascending of the piston 59 raises the valve 61 which thereupon gives entrance to the air into the cylinder (50. Vl hen the roller 39 is being returned, the sheet 1st slides freely upon the latter since the contact has been suppressed by the elevation of the rollers 50 (Fig. 7). I

When the sheet 14: is advancing the rollers 50 and the shaft 45 have acquired a re speed corresponding to the'feeding speed of the sheet. The setting at rest of the roll- 50 in their elevated position is effected action bythe belt GS (Fig. 9). Its tension is dd:

justed in such a way that therollers 50 are set at rest when they come to pinch the new sheet on the roller The descending oi the shaft 45 slacliensthe belt so that the shaft and the rollers may turn freely during the feeding of the sheet.

After. the passage of the end of the sheetthe targets 2 are raised under the action of the springs 9 for putting another sheet in place. 1 There may occur cases when' it wished to introduce a sheetinto the shaproller 39. By turning the knob 87 by 90 the arm 85 stops the lever 21 and prevents the rise of the targets 2, besides the nose 89 of.

the connecting rodati may no longer descend since the arm 86 is now'in a vertical position and thus prevents the rollers 50 to descend upon the roller 39. This latter runs idle. The spacebetween the guides: 13 and 3% is continuously free so that the: sheets may be introduced directly into the rollers 71 and 72 which are continuously talren along by the shaping machine.

By again turning the knob by 90 the motion ofthe targets 2 and the descending of the rollers 50 is reestablished.

For adjusting the shapingmachinesheet may be slid upto the shapingapparatus whilst the machine is bein storied bv turning the knob 87 by 90 for causing the stoppage of the targets 2 and the rollers 50 and by raising the roller 72 by means of the hooks 80, 81. Y

The entrainin rollers T 1, 72 might be eliminated in order to allow to deliver the sheets directly to the taking along members of the working machine.

Having now described my invention and the manner in which it is to be performed, I declare that what I claim is:

1. A mechanism for margining and feeding the sheets to rotary machines working the paper, the cardboard and other sheet-material, comprising, in combination,

'margining members, a device for the introduction of margined sheets and presenting rotary feeding members between which the sheets are caused to pass in order to arrive at the margiaing members, at least one ing machine without utilizing the mecha-.

&

bers producing the advance of the sheet, a braking device provided for suspending-the motion of this rotary member when the toothed sector which operates it is made to return, for the purposeof avoiding shocks in the working of the mechanism.

2. A mechanism for margining and feed ing the sheets to rotary machines for working the paper, the cardboard and other sheet-material con'iprising, in combination, a

periodically operating the marginingand the feeding members, these latter at least for the purpose of separating them one from the other in order to enable a. sheet to arrive in front of the margining members and for stopping the rotation of the feeding members in such a. manner that the sheet may be pinched during such a stoppage of rotation, a toothed sector to cause the rota tion of one of-tlre rotary members producing the advanceof the sheet, an air brake for suspending the motion of this rotary mem her when the toothed sector is made to return, said air brake comprising a cylinder in which a piston is displaced, said pis tio-n having a valve for adjusting the speed of the displacement of the piston within said cylinder.

3. A mechanism for margining and feeding the sheets to rotary machines for workin (r the paper, the cardboard or other sheet material comprising, in combination, a device for the introduction of ma-rgined sheets and presenting rotary feeding members between which the sheet is made to pass in order to arrive at margining members, at least one of said rotary members being adapted to become vertically adjusted with regard to one another, members for periodically operating the margining and the feeding members, these latter at least for the purpose of separating them one from the other in order to enable a sheet to arrive in front of the feeding members and for stopping the rotation of the feeding members in such a manner that the sheet may be pinched during such a stoppage of rotation, the feeding members being arranged one on top of the other, the bottom one being fixed while the top member is vertically displace-able, the bottom member being constituted by a shaft carrying a roller and the top member by a shaft carrying at least two rollers adapted to bear upon the sheet to be taken along in order to move it, a guide being disposed between each pair of these rollers for depressing the sheets tending to rise, said guide being adjustable in height according to the thickness of the sheets, each margining memher being provided with a guide of fixed height laterally displaceable for retaining the sheets which may tend to descend, the top guide and the rollers of the top guide being transversely movable in order to arrange them opposite the lower guides and the margining members.

4. A mechanism for margining and feed-- ing the sheets to rotary machines for working the paper, the card-board or other sheet material comprising in combination a device for the introduction of margined sheets and presenting rotary feeding members between which the sheet is made to pass in order to rrive at margining members, at least one of said rotary members being adapted to become vertically adjusted with regard to one another, members for periodically operating the margining and the feeding members, these latter at least for the purpose of separating them one from the other in order to enable a sheet to arrive in front of the margining members and for stopping the rotation of the feeding members in such a manner that the sheet may be pinched during such a stoppage of rotation, members provided for giving the feeding members a motion in order to deliver the sheet to the entraining members of the machine at a speed essentially equal to their circumference speed, said members comprising a cam upon which a roller mounted on a bent lever is made to rest, said, bent lever being submitted to the action of a spring which continually tends to make the roller to bear upon the cam, one of the legs of the lever carrying a toothed sector which engages with apinion of the lower rotary feeding member.

5. A mechanism as claimed in claim 3 comprising means to brake the top shaft when it is out of engagement with a sheet in order to stop its motion.

6. A mechanism as claimed in claim 3 comprising a belt adapted to stop the rotation of the top shaft when the shaft is in its raised position while the latter is left free whilst being in its lower position.

7. A mechanism for marginin and feed ing the sheets to rotary machines for work-' ing the paper, the card-board or other sheet material comprising in combination a device for the introduction of margined sheets and presenting rotary feeding members'between which the sheet is made to pass in order to arrive at margining members, the

top rotary member being adapted to become vertically adjusted with regard to the lower rotary member, members for periodically operating the mar 'ining and the feeding memhere, these latter at least for the purpose of separating them one from the other in order to enable a sheet to arrive in front of the margining members and for stopping the rotation 01? the feeding members in such it manner that the sheet may be pinched during such a stoppage of rotation, the margining members being targets Whi h are dis posed in such a manner as to allow of their transversal displacement With regard to the direction of displacement of the sheets as Well as of their displacement in the direction of that of the sheets, members adapted to stop the motion of the targets and the escending and descending motion of the top rotary member, these members comprising a shaft carrying tWo arms arranged in such a manner that when the mechanism is running and this shaft is given a movement about 90 the arms carried by it will lock the one of them the driving members of the r 7 HENRI BOBST. 

